Table 2

Mean baseline and 3-month EASQ z-scores, and comparison of z-score changes, by study arm, n=60

EASQ z-scores vs World Bank normed Peruvian data (limited to children aged 6–24 months at follow-up)
VariableBaseline
(n=49)
3-month follow-up
(n=49)
Difference in differences, intervention-control (n=49)
Control arm mean (robust SE) (n=19)Intervention arm mean (robust SE) (n=41)Robust P valuesControl arm mean (robust SE) (n=15)Intervention arm mean (robust SE) (n=34)Robust P valuesUnadjusted mean difference (95% CI; P values)Adjusted mean difference (95% CI; P values)
Total EASQ z-scores−1.26 (0.26)−1.52 (0.16)0.39−1.36 (1.67)−0.55 (0.98)0.081.06 (0.13 to 2.00; 0.025)1.39 (0.49 to 2.29; 0.003)
EASQ communication domain z-scores−1.76 (0.21)−1.82 (0.17)0.81−1.42 (1.45)−0.83(0.77)0.070.65 (−0.15 to 1.46; 0.11)0.97 (0.23 to 1.71; 0.01)
EASQ motor domain z-scores−0.59 (0.25)−0.52 (0.15)0.82−0.57 (1.27)0.07 (0.91)0.080.57 (− 0.13 to 1.27; 0.11)0.67 (−0.09 to 1.43; 0.08)
EASQ personal/social domain z-scores−0.85 (0.35)−1.41 (0.21)0.17−1.31 (1.52)−0.48 (1.07)0.061.40 (0.42 to 2.39; 0.006)1.72 (0.77 to 2.67; 0.001)